Pump



FIG. 1 is a front-right-top perspective view of a pump, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof, the elements shown in broken lines is for illustrative purpose only and forms no part of the claimed design. 

The ornamental design for a pump, as shown and described. 